实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
AخA
 
1
<!DOCTYPE html>
2
<html>
3
    <head>
4
        <title>
5
            String Example 3
6
        </title>
7
        <script type="text/javascript">
8
            var value1 = 10;
9
            var value2 = true;
10
            var value3 = null;
11
            var value4;
12
            alert(String(value1)); //"10"
13
            alert(String(value2)); //"true"
14
            alert(String(value3)); //"null"
15
            alert(String(value4)); //"undefined"
16
        </script>
17
    </head>
18
    <body>
19
    </body>
20
</html>